Biostatistics By Blueman
Introduction You may be familiar with probability and statistics through radio, television, newspapers, and magazines. For example, you may have read statements like the following found in newspapers. Nearly one in seven U.S. families are struggling with bills from medical expenses even though they have health insurance. (Source: Psychology Today.) Eating 10 grams of fiber a day reduces the risk of heart attack by 14%. (Source: Archives of Internal Medicine, Reader’s Digest.) Thirty minutes of exercise two or three times each week can raise HDLs by 10% to 15%. (Source: Prevention.) In 2008, the average credit card debt for college students was $3173. (Source: Newser.com.) About 15% of men in the United States are left-handed and 9% of women are left [1] handed. (Source: Scripps Survey Research Center.) The median age of people who watch the Tonight Show with Jay Leno is 48.1. (Source: Nielsen Media Research.) Statistics is used in almost all fields of human endeavor. In